Glass-blower&#39;s tube.



No. 733,130. PATENTED JULY 7, 1903. J. D. BLAKELEY.

GLASS BLOWERS TUBE.v

APPLIonIoN Hum oo'r.15. 1902.

H0 MODEL.

,y g (md l I T E NOIUUS PETERS CO PHOO Ll N D C UNITED STATES 'Patented .my 7, 190e.

JOHN D. BLAKELEY, OF LIMA, OHIO.

GLASS-BLOWERS TUBE.

SPECIFICATION forming part 0f Letters Patent No. '7 33,130, dated July 7, 1903. Application filed October l5, 1902. Serial No. 127.396'. (No model.)

To @ZZ whom, it mfcty concern:

tube being on a slight taper, so as to facili- Be it known that I, JOHN D. BLAKELEY, a 'tate the application of the mouthpiece thereto.

citizen of the United States, residing at Lima, in the county of Allen and State of Ohio, have invented new and useful Improvements in Glass-Blowers Tubes, of which the following is a speciiication.

This invention relates to glass blowers tubes, and more especially to a mouthpiece therefor, and the improved device is simple and effective.

I provide for the tube a removable mouthpiece, so that each blower can'have his individual mouthpiece, by reason of which it is not possible to transmit contagious diseases from one operator to another. The mouthpiece is in the present case held frictionally in place by means including an elastic gasket or washer suitably held in au annular groove or channel in one part, and preferably the gasket or washer is carried by the mouthpiece. In the preferred form of the invention the mouthpiece includes a tubular body fitted by a screw-thread joint into a ring or collar, the latter having upon its inner wall a circular groove or channel to receive the gasket or washer, which is positively held from displacement by the tubular body of the mouthpiece. The gasket or washer extends beyond the inner wall or ring, so that when I[he latter is slipped over the upper end of the blowers tube the mouthpiece is frictionally secured against removal by ordinary jars, although the mouthpiece can be readily taken off by a slight pressure exerted by the user.

In the drawings forming a part of this specification, Figure l is an elevation of the preferred form of the mouthpiece. Fig. 2 is a longitudinal central section of the blowers tube and mouthpiece attached thereto. Fig. 3 is a detail sectional view of the mouthpiece with the several parts thereof separated from eachother. Figeisasectionalviewofamodified form of the invention.

Like characters refer to like parte in all the figures.

The tube and its mouthpiece may be made from any suitable material, the said parts being denoted in a general way by the numerals 5 and 6, respectively, the upper end of the In the preferred form of the invention and as illustrated more particularly in Fig. 3 the mouthpiece 6 includes a tubular body 7, having at what might be considered its lower end an externally threaded portion, the threads of which are adapted to engage corresponding and internal threads upon the ring or collar 8 in order to hold the two parts united, as represented in Fig. l. Upon the inner wall of the ring 8 I form a circular channel or groove 9, adapted to snugly receive the circular gasket or washer 10 of some elastic material-such, for example, as rubber-the gasket being deeper than the channel, so that the inner face of the gasket can project beyond the corresponding wall of the ring 8 in order that said gasket can secure a proper purchase upon the upper and somewhat tapered end of the blowers tube 5. I do not rely wholly upon the elasticity of the gasket l0 to hold the same in the circular channel or seat 9, but run the tubular body 7 ofthe mouthpiece into the ring 8 until the lower end of said body abuts against the gasket, and thereby holds the same positively in place. Besides this, the said tubular body can be employed for compressing the gasket in order to take up wear in the latter or in order to regulate the fit of the mouthpiece to the blower-s tube. It will be understood that the mouthpiece can be readily applied to the tube by inserting the latter into the formeigand the two are held firmly and against detachment by ordinary jars. The mouthpiece, however, can be easily removed from the tube by the application of pressure thereto by the user.

In Fig. et I illustrate a modification of the device wherein the upper end of the tube 5 has an enlarged head 11, externally threaded to receive the ring 8. The inner wall of the ring 8 has a groove or channel to receive the gasket 10, of rubber or its'equivalent, which 95 is held in place by turning the ring or nut 8/ onto the threaded head l1, such action of course compressing the gasket l0', as was done in the other ease. The ring or nut 8' therefore presents upon its inside an elastic IOO surface which is adapted to frictionally engage the mouthpiece 6 when the same is inserted into the said ring 8'. The mouthpiece 6', it will be understood, is plain or consists simply of a tube in one piece.

In both cases hereinbefore described it will be understood that the mouthpiece is removable and is connected frictionally with the blowers tube, so that it can be easily applied and removed, and both operations can be accomplished with rapidity. By virtue of the rubber gasket hereinbefore described in connection with each of the mouthpieces the escape of air from the mouthpiece at the joint between the same and the tube is positively prevented.

It will be seen on reference to Figs. 2 and 4 that the internal diameter of the mouthpiece is substantially the same as that of the tube, so that when such parts are assembled or fitted together their interiors present practically a continuous bore of approximately uniform diameter throughout its entire length.

interiorly threaded to engage said threaded portion, having an annular channel in its inner wall, and an elastic gasket fitted in said channel, arranged to engage one of said two first-mentioned parts.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

JOHN D. BLAKELEY. Witnesses:

GEO. D. BEAUMONT, S. S. WHEELER. 

